[INFO] fetching crate fungi-lang 0.1.63...
[INFO] testing fungi-lang-0.1.63 against 1.60.0 for beta-1.61-1
[INFO] extracting crate fungi-lang 0.1.63 into /workspace/builds/worker-11/source
[INFO] validating manifest of crates.io crate fungi-lang 0.1.63 on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate fungi-lang 0.1.63
[INFO] finished tweaking crates.io crate fungi-lang 0.1.63
[INFO] tweaked toml for crates.io crate fungi-lang 0.1.63 written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded adapton v0.3.31
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 21b46f0c149a4ba76a8be5a4cdfc91fad0b467d4e049f7661c9f5ffb03bf736c
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "21b46f0c149a4ba76a8be5a4cdfc91fad0b467d4e049f7661c9f5ffb03bf736c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "21b46f0c149a4ba76a8be5a4cdfc91fad0b467d4e049f7661c9f5ffb03bf736c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "21b46f0c149a4ba76a8be5a4cdfc91fad0b467d4e049f7661c9f5ffb03bf736c", kill_on_drop: false }`
[INFO] [stdout] 21b46f0c149a4ba76a8be5a4cdfc91fad0b467d4e049f7661c9f5ffb03bf736c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 7cbb6cc44be4a6b32f8feb22164e865193ad1e29045df0f4e28920899c4b3a4d
[INFO] running `Command { std: "docker" "start" "-a" "7cbb6cc44be4a6b32f8feb22164e865193ad1e29045df0f4e28920899c4b3a4d", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling serde v1.0.136
[INFO] [stderr]    Compiling adapton v0.3.31
[INFO] [stderr]    Compiling aho-corasick v0.6.10
[INFO] [stderr]    Compiling nom v4.2.3
[INFO] [stderr]    Compiling regex v0.2.11
[INFO] [stderr]    Compiling serde_json v1.0.79
[INFO] [stderr]    Compiling fungi-lang v0.1.63 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/lib.rs:95:1
[INFO] [stdout]    |
[INFO] [stdout] 95 | #![feature(crate_in_paths)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove the attribute
[INFO] [stdout]    |
[INFO] [stdout]    = help: the feature `crate_in_paths` has been stable since 1.30.0 and no longer requires an attribute to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]    --> src/shared.rs:182:1
[INFO] [stdout]     |
[INFO] [stdout] 182 | / /// Global table of serialized objects; permits us to avoid multiple
[INFO] [stdout] 183 | | /// serialized copies of a single, shared object.
[INFO] [stdout]     | |_------------------------------------------------^
[INFO] [stdout]     |   |
[INFO] [stdout]     |   rustdoc does not generate documentation for macro invocations
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_doc_comments)]` on by default
[INFO] [stdout]     = help: to document an item produced by a macro, the macro must produce the documentation as part of its expansion
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/normal.rs:501:19
[INFO] [stdout]     |
[INFO] [stdout] 501 |                 }};
[INFO] [stdout]     |                   ^ help: remove this semicolon
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `vt100` is imported redundantly
[INFO] [stdout]    --> src/decide.rs:420:13
[INFO] [stdout]     |
[INFO] [stdout] 203 |         decide::equiv, vt100,
[INFO] [stdout]     |                        ----- the item `vt100` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 420 |         use crate::vt100;
[INFO] [stdout]     |             ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `vt100` is imported redundantly
[INFO] [stdout]    --> src/decide.rs:560:13
[INFO] [stdout]     |
[INFO] [stdout] 203 |         decide::equiv, vt100,
[INFO] [stdout]     |                        ----- the item `vt100` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 560 |         use crate::vt100;
[INFO] [stdout]     |             ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]     --> src/decide.rs:1376:18
[INFO] [stdout]      |
[INFO] [stdout] 1376 |                 };
[INFO] [stdout]      |                  ^ help: remove this semicolon
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `vt100` is imported redundantly
[INFO] [stdout]     --> src/decide.rs:1740:13
[INFO] [stdout]      |
[INFO] [stdout] 1128 |     use crate::vt100;
[INFO] [stdout]      |         ------------ the item `vt100` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 1740 |         use crate::vt100;
[INFO] [stdout]      |             ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `vt100` is imported redundantly
[INFO] [stdout]     --> src/decide.rs:1913:13
[INFO] [stdout]      |
[INFO] [stdout] 1128 |     use crate::vt100;
[INFO] [stdout]      |         ------------ the item `vt100` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 1913 |         use crate::vt100;
[INFO] [stdout]      |             ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]     --> src/bitype.rs:1514:6
[INFO] [stdout]      |
[INFO] [stdout] 1514 |     };
[INFO] [stdout]      |      ^ help: remove this semicolon
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Sort` is imported redundantly
[INFO] [stdout]    --> src/dynamics.rs:174:9
[INFO] [stdout]     |
[INFO] [stdout] 20  | use crate::ast::*;
[INFO] [stdout]     |     ------------- the item `Sort` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 174 |     use crate::ast::Sort;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/eval.rs:268:14
[INFO] [stdout]     |
[INFO] [stdout] 268 |             };
[INFO] [stdout]     |              ^ help: remove this semicolon
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/reduce.rs:630:14
[INFO] [stdout]     |
[INFO] [stdout] 630 |             };
[INFO] [stdout]     |              ^ help: remove this semicolon
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/db.rs:10:29
[INFO] [stdout]    |
[INFO] [stdout] 10 |     pub bracket_indent: Box<Display>,
[INFO] [stdout]    |                             ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 10 -     pub bracket_indent: Box<Display>,
[INFO] [stdout] 10 +     pub bracket_indent: Box<dyn Display>,
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/db.rs:11:28
[INFO] [stdout]    |
[INFO] [stdout] 11 |     pub bracket_close: Box<Display>,
[INFO] [stdout]    |                            ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 11 -     pub bracket_close: Box<Display>,
[INFO] [stdout] 11 +     pub bracket_close: Box<dyn Display>,
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/shared.rs:179:29
[INFO] [stdout]     |
[INFO] [stdout] 179 |     table:HashMap<Id,Box<Rc<Any>>>
[INFO] [stdout]     |                             ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 179 -     table:HashMap<Id,Box<Rc<Any>>>
[INFO] [stdout] 179 +     table:HashMap<Id,Box<Rc<dyn Any>>>
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/ast.rs:416:16
[INFO] [stdout]     |
[INFO] [stdout] 416 |     pub ops:Rc<HostObjOps>,
[INFO] [stdout]     |                ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 416 -     pub ops:Rc<HostObjOps>,
[INFO] [stdout] 416 +     pub ops:Rc<dyn HostObjOps>,
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/ast.rs:418:16
[INFO] [stdout]     |
[INFO] [stdout] 418 |     pub any:Rc<any::Any>
[INFO] [stdout]     |                ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 418 -     pub any:Rc<any::Any>
[INFO] [stdout] 418 +     pub any:Rc<dyn any::Any>
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/ast.rs:451:17
[INFO] [stdout]     |
[INFO] [stdout] 451 |     pub eval:Rc<Fn(Vec<dynamics::RtVal>) -> dynamics::ExpTerm>
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 451 -     pub eval:Rc<Fn(Vec<dynamics::RtVal>) -> dynamics::ExpTerm>
[INFO] [stdout] 451 +     pub eval:Rc<dyn Fn(Vec<dynamics::RtVal>) -> dynamics::ExpTerm>
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/ast.rs:421:24
[INFO] [stdout]     |
[INFO] [stdout] 421 |     fn eq(&self, x:&Rc<any::Any>, y:&Rc<any::Any>) -> bool;
[INFO] [stdout]     |                        ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 421 -     fn eq(&self, x:&Rc<any::Any>, y:&Rc<any::Any>) -> bool;
[INFO] [stdout] 421 +     fn eq(&self, x:&Rc<dyn any::Any>, y:&Rc<any::Any>) -> bool;
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/ast.rs:421:41
[INFO] [stdout]     |
[INFO] [stdout] 421 |     fn eq(&self, x:&Rc<any::Any>, y:&Rc<any::Any>) -> bool;
[INFO] [stdout]     |                                         ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 421 -     fn eq(&self, x:&Rc<any::Any>, y:&Rc<any::Any>) -> bool;
[INFO] [stdout] 421 +     fn eq(&self, x:&Rc<any::Any>, y:&Rc<dyn any::Any>) -> bool;
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/ast.rs:422:26
[INFO] [stdout]     |
[INFO] [stdout] 422 |     fn hash(&self, x:&Rc<any::Any>) -> u64;
[INFO] [stdout]     |                          ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 422 -     fn hash(&self, x:&Rc<any::Any>) -> u64;
[INFO] [stdout] 422 +     fn hash(&self, x:&Rc<dyn any::Any>) -> u64;
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/ast.rs:423:43
[INFO] [stdout]     |
[INFO] [stdout] 423 |     fn fmt(&self, f:&mut Formatter, x:&Rc<any::Any> ) -> fmt::Result;
[INFO] [stdout]     |                                           ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 423 -     fn fmt(&self, f:&mut Formatter, x:&Rc<any::Any> ) -> fmt::Result;
[INFO] [stdout] 423 +     fn fmt(&self, f:&mut Formatter, x:&Rc<dyn any::Any> ) -> fmt::Result;
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/hostobj.rs:53:67
[INFO] [stdout]    |
[INFO] [stdout] 53 | pub fn obj_of_any<X:'static+Debug+Hash+Eq+PartialEq+Clone> (x:&Rc<Any>) -> Option<X> {
[INFO] [stdout]    |                                                                   ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 53 - pub fn obj_of_any<X:'static+Debug+Hash+Eq+PartialEq+Clone> (x:&Rc<Any>) -> Option<X> {
[INFO] [stdout] 53 + pub fn obj_of_any<X:'static+Debug+Hash+Eq+PartialEq+Clone> (x:&Rc<dyn Any>) -> Option<X> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/hostobj.rs:63:24
[INFO] [stdout]    |
[INFO] [stdout] 63 |     fn eq(&self, x:&Rc<Any>, y:&Rc<Any>) -> bool {
[INFO] [stdout]    |                        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 63 -     fn eq(&self, x:&Rc<Any>, y:&Rc<Any>) -> bool {
[INFO] [stdout] 63 +     fn eq(&self, x:&Rc<dyn Any>, y:&Rc<Any>) -> bool {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/hostobj.rs:63:36
[INFO] [stdout]    |
[INFO] [stdout] 63 |     fn eq(&self, x:&Rc<Any>, y:&Rc<Any>) -> bool {
[INFO] [stdout]    |                                    ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 63 -     fn eq(&self, x:&Rc<Any>, y:&Rc<Any>) -> bool {
[INFO] [stdout] 63 +     fn eq(&self, x:&Rc<Any>, y:&Rc<dyn Any>) -> bool {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/hostobj.rs:69:26
[INFO] [stdout]    |
[INFO] [stdout] 69 |     fn hash(&self, x:&Rc<Any>) -> u64 {
[INFO] [stdout]    |                          ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 69 -     fn hash(&self, x:&Rc<Any>) -> u64 {
[INFO] [stdout] 69 +     fn hash(&self, x:&Rc<dyn Any>) -> u64 {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/hostobj.rs:75:43
[INFO] [stdout]    |
[INFO] [stdout] 75 |     fn fmt(&self, f:&mut Formatter, x:&Rc<Any> ) -> fmt::Result {
[INFO] [stdout]    |                                           ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 75 -     fn fmt(&self, f:&mut Formatter, x:&Rc<Any> ) -> fmt::Result {
[INFO] [stdout] 75 +     fn fmt(&self, f:&mut Formatter, x:&Rc<dyn Any> ) -> fmt::Result {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/shared.rs:215:29
[INFO] [stdout]     |
[INFO] [stdout] 215 |                 let x : &Rc<Any> = &**brc;
[INFO] [stdout]     |                             ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 215 -                 let x : &Rc<Any> = &**brc;
[INFO] [stdout] 215 +                 let x : &Rc<dyn Any> = &**brc;
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/shared.rs:216:42
[INFO] [stdout]     |
[INFO] [stdout] 216 |                 let y : Result<Rc<T>, Rc<Any>> = (x.clone()).downcast::<T>();
[INFO] [stdout]     |                                          ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 216 -                 let y : Result<Rc<T>, Rc<Any>> = (x.clone()).downcast::<T>();
[INFO] [stdout] 216 +                 let y : Result<Rc<T>, Rc<dyn Any>> = (x.clone()).downcast::<T>();
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/hostobj.rs:54:30
[INFO] [stdout]    |
[INFO] [stdout] 54 |     let r : Result<Rc<X>, Rc<Any>> = (x.clone()).downcast::<X>();
[INFO] [stdout]    |                              ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 54 -     let r : Result<Rc<X>, Rc<Any>> = (x.clone()).downcast::<X>();
[INFO] [stdout] 54 +     let r : Result<Rc<X>, Rc<dyn Any>> = (x.clone()).downcast::<X>();
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 29 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `fungi-lang` due to 2 previous errors; 29 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "7cbb6cc44be4a6b32f8feb22164e865193ad1e29045df0f4e28920899c4b3a4d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7cbb6cc44be4a6b32f8feb22164e865193ad1e29045df0f4e28920899c4b3a4d", kill_on_drop: false }`
[INFO] [stdout] 7cbb6cc44be4a6b32f8feb22164e865193ad1e29045df0f4e28920899c4b3a4d